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. 2013 May 8;13(3):320–327. doi: 10.1007/s12663-013-0519-2
Parameter Laser site (n = 25) Scalpel site (n = 25) P value
Scarring after 1 month (after 1 month) (mean SD) 1.52 (0.68) 1.95 (0.69) 0.045
Scarring (after 1 month) levels
 No scar 0 0 0.038
 Excellent/mild scar 12 (57.1) 5 (25.0)
 Good/moderate scar 7 (33.3) 11 (55.0)
 Fair/severe scar 2 (9.5) 4 (20.0)
 Poor 0 0

Values are mean (SD). P value by Mann–Whitney U test, a non-parametric test to test the significance of difference between two independent groups

Values are n (%). P value by Fischer’s exact test